2023
DOI: 10.1109/jphot.2023.3246500
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Experimental Demonstration of LLO Continuous-Variable Quantum Key Distribution With Polarization Loss Compensation

Abstract: The compensation process for the state of polarization (SOP) from quantum signal plays an important role in the practical implementation of continuous-variable quantum key distribution (CV-QKD). In contrast to the previous scheme using an expensive digital dynamic polarization controller, we choose a cheaper manual polarization controller interfaced with a digital algorithm based on Kalman filter to achieve compensation of the polarization loss under the condition that the SOP of the fiber is relatively stable… Show more

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Cited by 6 publications
(3 citation statements)
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“…Post-quantum cryptographic algorithms are designed to resist quantum attacks, offering robust security even in the face of quantum adversaries. Prominent examples include lattice-based cryptography, code-based cryptography, and hash-based cryptography [13,14,15].…”
Section: Literature Reviewmentioning
confidence: 99%
“…Post-quantum cryptographic algorithms are designed to resist quantum attacks, offering robust security even in the face of quantum adversaries. Prominent examples include lattice-based cryptography, code-based cryptography, and hash-based cryptography [13,14,15].…”
Section: Literature Reviewmentioning
confidence: 99%
“…4,5 The former has a relatively long history of development and mature technology; The latter has unique advantages in integrating into existing optical networks. With the development of theoretical research 6,7 and experimental implementation 8,9 in the field of QKD, how to deploy global quantum network to adapt to practical applications is urgent. For this reason, many network structures have been proposed to transform QKD from point-to-point to end-to-end.…”
Section: Introductionmentioning
confidence: 99%
“…The LLO scheme where LO is produced from a separate laser at Bob's side avoids the above problems but is also faced with the difficulty in eliminating the frequency offset between Alice's and Bob's individual lasers. Since the first two proposals in 2015 [24,25], numerous local-local-oscillator experiments have been realized by researchers [26][27][28][29][30][31], and various pilot schemes are designed to reduce the frequency offset and phase noise, including pilot sequences and pilot multiplexing.…”
Section: Introductionmentioning
confidence: 99%